[Milsurplus] Cmd set rec ant mod

[Bill Cromwell]

On 08/22/2013 11:21 PM, mac wrote:
> Larry,
>
> Presume you meant that after removing the original cap between the 
> antenna post and the "hot" end of the antenna coil, then install a new 
> .01 ufd unit between the antenna post and the other (ground) end of 
> the coil.  And also, then break the ground lead from the coil and 
> replace it with a .001 ceramic cap.  OK, in doing this one would be 
> essentially feeding the antenna into a tap up on the capitative side 
> of the  resonant circuit.  Might work but not sure about the 3-5 db 
> gain claim. 

> ***Would also note that selectivity***,

> not sensitivity the big problem encountered in using command set 
> receivers on the ham bands.  If someone tries this please let us all 
> know how it works out.
> .
> Dennis D.  W7QHO
> Glendale, CA
>
I have been using the DSP sound card sofware running on my computer for 
some dramatic improvements in selectivity. You get a panadapter display 
and some other DSP benefits, at the same time you are using the command 
receiver "as designed". Those programs work with *any* receiver 
including a 1930s regen and a RAK. Their usefulness is not limited to 
YaeComWoodTecCraft radios!

Take a look at Spectran...

http://www.sdradio.eu/weaksignals/spectran.html

The software is free, and you probably already own a computer.

73,

Bill  KU8H